Observatory · observe first

Follow the allocation change

Matched S&P 500 members → sector → industry → sub-industry → company. Each step uses the same percentage points.

Historical time machine

Historical observation

20182026

Universe›Energy›Oil & Gas Exploration & Production›Oil & Gas Exploration & Production

1 · Sector

Weight and 12M allocation change

Information Technology27.5%+27.47 pp Health Care16.1%+16.09 pp Industrials11.8%+11.83 pp Consumer Discretionary7.3%+7.33 pp Consumer Staples7.0%+6.99 pp Communication Services4.3%+4.28 pp Materials3.2%+3.15 pp Real Estate3.1%+3.13 pp Utilities3.0%+2.99 pp Energy2.3%+2.34 pp Financials14.3%-85.61 pp

2 · Industry

Inside Energy

Oil & Gas Exploration & Production0.75%+0.75 pp Integrated Oil & Gas0.69%+0.69 pp Oil & Gas Refining & Marketing0.35%+0.35 pp Oil & Gas Storage & Transportation0.33%+0.33 pp Oil & Gas Equipment & Services0.21%+0.21 pp

3 · Sub-industry

Inside Oil & Gas Exploration & Production

Oil & Gas Exploration & Production0.75%+0.753 pp

Concentrated

Most of this industry's gains came from a few companies.

View all contributions →

Oil & Gas Exploration & Production · weight

0.75%

Industry change · 12M

+0.75 pp

Oil & Gas Exploration & Production · contribution

+0.753 pp

Company participation

100%

of industry constituents above their 6M weight average

4 · Companies driving this sub-industry

Sep 2021 · sorted by absolute contribution to 12-month change

Company	Country	Market cap	Universe weight	3M contribution	12M contribution	12M price return	Above 6M weight average
ConocoPhillips → COP	United States	$90.7bn	0.319%	+0.028 pp	+0.318 pp	+114.1%	Yes
EOG Resources → EOG	United States	$46.9bn	0.165%	-0.007 pp	+0.164 pp	+132.4%	Yes
Occidental Petroleum → OXY	United States	$27.6bn	0.097%	-0.006 pp	+0.097 pp	+196.0%	Yes
Devon Energy → DVN	United States	$24.0bn	0.084%	+0.015 pp	+0.084 pp	+293.9%	Yes
Diamondback Energy → FANG	United States	$17.1bn	0.060%	+0.000 pp	+0.060 pp	+223.3%	Yes
APA Corporation → APA	United States	$8.1bn	0.028%	-0.000 pp	+0.028 pp	+127.9%	Yes

Company contributions use weights among matched S&P 500 members and add through each level without rescaling. Companies without matched shares and prices are omitted. These observations do not establish official index weights or actual fund flows.